The group word is sister.

　　make a sentence

　　Sun Quan never imagined that the marriage between his sister and Liu Bei had come true.

　　Although my little sister is only five years old, she can recite the multiplication formula by heart.

　　Composition: Sister, Sister, Sister, Su Xiaomei, Cousin, Sister and A-mei.

　　As soon as my sister sees the doll, she wants her father to buy it.

　　2. He said happily, "Thank God, my sister's life has been saved!" .

　　3. Your sister is smart as ice and snow, and everyone likes her.

　　1. Brother and sister

　　Example: Wei's brother and sister followed their parents from childhood until they were teenagers, and went to different places to work faithfully for God's holy work.

　　2. Brother-in-law

　　Example: I watch many new plays every year, because my brother-in-law is the general manager of the local theater and often gives us tickets.

　　form words

　　1. Sisters

　　Example: Dad worked hard for us sisters day and night for years.

　　2. Cousin

　　Example: Approaching the Botanical Garden, wow, there are a lot of flowers, and all kinds of flowers are competing for beauty, which makes my cousin who has never been to the Botanical Garden overwhelmed. Looking at her excitement, I can't help but smile.

　　Brother-in-law, sister,

　　"Sister" is pronounced as mèi in Mandarin. The basic meaning of "sister" is a woman who is younger than her parents, such as sister and brother and sister; The extended meaning is to compare the names of younger women of the same age, such as cousin and school sister.

　　In ancient Chinese, "sister" means "ignorance", which means obscurity.

　　The pronunciation of the sister character is: mei, the radical of the sister character is next to the female character, the structure of the sister character is left and right, and the stroke order of the sister character is: horizontal left, right, horizontal, vertical, left and right, a total of seven paintings. Sister-in-law, sister, sister, brother and sister, cousin, cousin.

　　Answer, there are many combinations of sisters: for example, brother and sister, sister, sister, brother-in-law, sister's, sister is good, sister is gone, sister goes, sister says, there are many sisters, sister, sister, and so on.